Clayton County, IA

214 public highway bridges

Clayton County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Clayton County, Iowa contains 214 public highway bridges. Roughly 32.2% are rated “Good,” 57.9% “Fair,” and 9.8% “Poor.” Poor means the lowest applicable deck, superstructure, substructure, or culvert rating is 4 or below on the 0–9 NBI scale. It is a condition category, not a live safety or closure decision.

Responsible agencies inspect covered bridges on risk-based intervals under current NBIS rules and submit inventory data to FHWA annually. The list below shows every NBI-tracked bridge in the county. Use the “Sort by” controls to change the ordering, and click any row for its reported inspection date, traffic count, and condition fields.

Source: FHWA National Bridge Inventory. See methodology for full definitions.

214
Total Bridges
32.2%
Good
57.9%
Fair
9.8%
Poor Condition

Condition Distribution

Good
32.2% (69)
Fair
57.9% (124)
Poor
9.8% (21)

All Bridges (214)

310TH ST

Good

Over: STREAM

1.8 miles S of 300th, Clayton, IA

Built 2018 Load: 32.7 t ADT: 73

290TH ST

Good

Over: STREAM

0.5 miles W of Killdeer A, Clayton, IA

Built 2018 Load: 32.7 t ADT: 21

JOLES HOLLOW RD

Good

Over: JOLES CREEK

0.5 miles E Kale Ave, Clayton, IA

Built 2018 Load: 32.7 t ADT: 29

HEMLOCK RD

Good

Over: STREAM

092041004, Clayton, IA

Built 1999 Load: 32.7 t ADT: 30

EMPIRE RD

Good

Over: STREAM

0.5 miles S 270th St, Clayton, IA

Built 2017 Load: 32.7 t ADT: 35

GLIDER AVE

Good

Over: STREAM

094040706, Clayton, IA

Built 1985 Load: 32.7 t ADT: 73

ARMADA RD

Good

Over: STREAM

1.9 miles N of hwy 56, Clayton, IA

Built 2020 Load: 32.7 t ADT: 21

HAWK AVE

Good

Over: STREAM

1 mile N of Hwy 18, Clayton, IA

Built 2020 Load: 32.7 t ADT: 30

IOWA AVE

Good

Over: SMALL STREAM

091042206, Clayton, IA

Built 2005 Load: 32.7 t ADT: 79

BELGIAM RD

Good

Over: KLEINLEIN HOLLOW

091060204, Clayton, IA

Built 2004 Load: 33.7 t ADT: 30

IA 13

Good

Over: TURKEY RIVER

0.1 MI. N OF JCT. IA 56, Clayton, IA

Built 1982 Load: 34.6 t ADT: 2,800

FAWN HOLLOW

Good

Over: ROBERT'S CREEK

094053604, Clayton, IA

Built 1984 Load: 36.9 t ADT: 108

150TH ST

Good

Over: ROBERTS CREEK

0.6 m E Concord Ave, Clayton, IA

Built 2016 Load: 37.9 t ADT: 26

205TH ST

Good

Over: ROBERTS CREEK

094052503, Clayton, IA

Built 1991 Load: 37.9 t ADT: 304

HAWK AVE

Good

Over: STREAM

0.6 miles S Hilton Rd, Clayton, IA

Built 2016 Load: 38.6 t ADT: 20

US 52

Good

Over: BRANCH PONY CREEK

2.8 MI. N OF JCT IA 128, Clayton, IA

Built 1975 Load: 38.8 t ADT: 1,740

GALAXY RD

Good

Over: TURKEY RIVER

092040689, Clayton, IA

Built 2012 Load: 38.9 t ADT: 30

AZTEC RD

Good

Over: STREAM

093061904, Clayton, IA

Built 2020 Load: 39.2 t ADT: 35

EMBLEM RD

Good

Over: COX CREEK

092051703, Clayton, IA

Built 2008 Load: 39.9 t ADT: 135

GRAPE RD

Good

Over: DRY MILL CREEK

00000, Clayton, IA

Built 2011 Load: 39.9 t ADT: 79

DOLPHIN AVE

Good

Over: HICKORY CREEK

On Blackberry Rd, Clayton, IA

Built 2013 Load: 40.2 t ADT: 98

130TH ST

Good

Over: ROBERTS CREEK

0.5 miles E Gunder Rd, Clayton, IA

Built 2017 Load: 40.2 t ADT: 62

IA 128

Good

Over: DRY MILL CREEK

2.4 MI. E OF JCT. IA 13, Clayton, IA

Built 1979 Load: 40.7 t ADT: 1,420

IA 76

Good

Over: BLOODY RUN CREEK

0.2 MI. S OF N JCT. US 18, Clayton, IA

Built 1994 Load: 41.3 t ADT: 3,580

DOGWOOD AVE

Good

Over: STREAM

.1 M S 100th st, Clayton, IA

Built 2020 Load: 41.8 t ADT: 16

JAGUAR RD

Good

Over: ELK CREEK

000000000, Clayton, IA

Built 2009 Load: 42.8 t ADT: 579

MISSISSIPPI RD

Good

Over: SMALL

093022908, Clayton, IA

Built 1979 Load: 43.4 t ADT: 157

C 5X HARVESTER RD

Good

Over: BEAR CREEK

00000, Clayton, IA

Built 2011 Load: 43.7 t ADT: 108

B64 AGATE RD

Good

Over: STREAM

0.5 miles E Bugle Rd, Clayton, IA

Built 2018 Load: 45.0 t ADT: 295

LACE AVE

Good

Over: SMALL STREAM

093032510, Clayton, IA

Built 2005 Load: 45.7 t ADT: 11

KEYSTONE RD

Good

Over: SNY MAGILL

094032202, Clayton, IA

Built 2017 Load: 46.3 t ADT: 62

BIG SPRING HATCH

Good

Over: STREAM

IN BIG SPRING FISH HATCHE, Clayton, IA

Built 1992 Load: 46.7 t ADT: 10

172ND STREET

Good

Over: ROBERTS CREEK

094050703, Clayton, IA

Built 1993 Load: 48.2 t ADT: 26

230TH STREET

Good

Over: DRY MILL CREEK

093040801, Clayton, IA

Built 1993 Load: 49.8 t ADT: 44

165TH ST

Good

Over: SILVER CREEK

094050505, Clayton, IA

Built 1990 Load: 50.0 t ADT: 137

SPOOK CAVE RD

Good

Over: BLOODY RUN

095042204, Clayton, IA

Built 2004 Load: 50.0 t ADT: 113

CHERRYVALLEY RD

Good

Over: SMALL STREAM

091022760, Clayton, IA

Built 2012 Load: 54.1 t ADT: 104

IOWA AVE

Good

Over: ELK CREEK

T91,R4,S11, Clayton, IA

Built 2014 Load: 54.8 t ADT: 79

IRIS AVE

Good

Over: BLOODY RUN

095042404, Clayton, IA

Built 1996 Load: 58.0 t ADT: 59

CRYSTAL RD

Good

Over: STREAM

092062507, Clayton, IA

Built 1988 Load: 58.1 t ADT: 88

EVERGREEN RD

Good

Over: VOLGA RIVER

092052206, Clayton, IA

Built 1995 Load: 70.7 t ADT: 88

GRAIN RD

Good

Over: STREAM

T92, R4w, Sec5, Clayton, IA

Built 2014 Load: 99.9 t ADT: 11

NATURE AVE

Good

Over: SMALL STREAM

T91N,R2W,Sec5, Clayton, IA

Built 2014 Load: 99.9 t ADT: 11

BRIDGE ST

Poor

Over: TURKEY RIVER

C25050530, Clayton, IA

Built 1889 Load: 4.5 t ADT: 4,755

B60-IVORY RD

Poor

Over: NORTH CEDAR CREEK

094031704, Clayton, IA

Built 1913 Load: 9.4 t ADT: 5

A AVE

Poor

Over: STREAM

092060604, Clayton, IA

Built 1900 Load: 9.7 t ADT: 11

300TH ST

Poor

Over: MINERS CREEK

092031205, Clayton, IA

Built 1916 Load: 10.0 t ADT: 39

172ND ST

Poor

Over: STREAM

094050903, Clayton, IA

Built 1916 Load: 10.8 t ADT: 16

JUNE AVE

Poor

Over: SMALL STREAM

091030710, Clayton, IA

Built 1910 Load: 11.0 t ADT: 21

295TH ST

Poor

Over: STREAM

092051203, Clayton, IA

Built 1910 Load: 11.0 t ADT: 51

Read our methodology - how this data is sourced, computed, and verified.

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Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainBridges

Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.